Fire resistant cable model specifications, fire resistant cable models

Model Name Remarks NA-YJV NB-YJV XLPE insulated PVC sheathed Class A (B) fire-resistant power cable can be laid in rooms, tunnels and pipelines with fire resistance requirements. NA-YJV22 NB-YJV22 XLPE insulated steel tape armored PVC sheathed class A (B) fire-resistant power cable is suitable for buried laying when fire resistance is required, and is not suitable for laying in pipelines. WDNA-YJY WDNB-YJY XLPE insulated polyolefin sheathed Class A (B) halogen-free low-smoke fire-resistant power cable can be laid in indoors, tunnels and pipelines that require halogen-free, low-smoke and fire-resistance.

WDNA-YJY23 WDNB-YJY23 XLPE Insulated Steel Tape Armored Polyolefin Sheathed Class A (B) Halogen-free Low-smoke Fire-resistant Power Cable It is suitable for buried laying when halogen-free, low-smoke and fire-resistant are required, and are not suitable for laying in pipelines.

Fire-resistant cable specifications and models with n or nh?

According to the GB T19666-2008 standard for flame retardant and fire-resistant cables.

The flame retardant model was changed from ZR to ZA, ZB, ZC, ZD.

The refractory model was changed from NH to N.

For example: flame retardant BVR cable, the model number is written as ZC-BVR-450 750V.

Fire-resistant BVR cable, model number is written as N--BVR-450 750V.

Fire-resistant YJV cable, model number is written as:

The model code of flame retardant wire is ZAN, ZBN, and ZCN, which are divided into ABC and other grades according to the different flame retardant effects of wires. A single refractory wire is denoted by NH, and when it has other functions, it is denoted by the letter N, such as flame retardant twisted pair: BN-RVS.

What does the flame retardant rating and model of the cable mean? The correct model of flame retardant wire should be ZR-flame retardant. The cable representation is mainly composed of three parts: model, specification and standard number.

For details, refer to the model number on the cable or wire sheath. Generally, those with z are flame retardant, and those with n are flame retardant. Irradiated flame retardant wires look denser than ordinary wires and feel different.

Irradiated flame retardant wires feel delicate and smooth, and look stronger. The current carrying capacity is greater than that of an ordinary wire. Environmental protection, safety and long service life.

What are the specifications and models of flame retardant cables? The model number of the flame retardant cable ** is ZR, and according to the different materials used in the cable, ** different markings will be written on the back. For example, V stands for PVC for the insulation of the cable, X for rubber, L for the conductor material of the cable for aluminum, T for copper, and V for PVC for the inner sheath of the cable.

How do I choose a cable? 1.First of all, check the outer packaging of the wire and cable to see if the outer packaging of the wire and cable is damaged during transportation.

In addition, it is necessary to check whether there is a certificate of conformity in the package, and whether the appearance time, rated voltage, and product specifications of the product are written on the certificate. 2.Check the identification of wires and cables, and check whether the product has 3C certification.

If the product has 3C certification, it means that the product has passed the relevant quality inspection, and the quality will be more guaranteed. Check the size of wires and cables. Generally speaking, the size of the wire and cable of *** meets the relevant national standards, and the cross-section and length of the wire and cable of poor quality will be tampered with.

3.If it is a wire for home use, it is recommended to choose a copper core wire. In order to buy a good copper cored wire, you need to know how to identify copper cored wire.

The color of pure copper wire is purple, while the color of low-quality copper wire is generally white or yellow.

1. RVVP: copper core PVC insulation shielding poly.

Vinyl chloride sheathed flexible cable voltage 300v 300v 2-24 cores. Edition.

2. RG: Physically weighted foamed polyethylene insulated access network cable is used to transmit data analog signals in coaxial fiber hybrid network (HFC).

3. UTP: LAN cable use: transmission, computer data, fire prevention, anti-theft security system, intelligent building information network.

4. KVVP: PVC sheathed braided shielded cable Uses: signal transmission, control and measurement of electrical appliances, instruments and power distribution devices.

5. SYWV (Y), SYKV cable TV, broadband network special cable structure: (coaxial cable) single oxygen-free round copper wire + physical foamed polyethylene (insulation) + (tin wire + aluminum) + polyvinyl chloride (polyethylene).

Models and specifications of power cables:

1. Use the capitalization of the first letter of Hanyu Pinyin to indicate the type of insulation, conductor material, inner sheath material and structural characteristics. For example, z is used to represent paper (zhi); l stands for aluminum (lv); q is for lead (qian); f stands for Fen; ZR stands for Flame Retardant (Zuran); NH stands for Refractory (Naihuo).

2. Use numbers to represent the composition of the outer sheath, with two digits. No number means no armor layer, no outer coat. The first digit indicates the armor, and the second digit indicates the outer coat, such as the outer jacket of the coarse steel wire armor fiber is represented as 41.

3. The cable models are generally arranged in order according to the cable structure: insulating material; conductor materials; inner sheath; Outer sheath.

4. Cable products are expressed by models, rated voltages and specifications. The method is to add a description of the rated voltage, number of cores and nominal cross-sectional area to the model number.

Model Details:

Category: H - Intracity communication cable.

HP – Wiring cable.

HJ - local cable.

Insulation: Y - polyethylene insulation.

YF – Foam polyolefin insulation.

YP - Foam solid skin polyolefin insulation.

Inner sheath: A - plastic-coated aluminum tape bonding shielding polyethylene sheath.

S - Aluminum, steel double metal with shielding polyethylene sheath.

v - PVC sheath.

Outer sheath: 23 - double-layer anticorrosive steel strip wrapping polyethylene outer coat.

33--Single-layer thin steel wire armored polyethylene quilt layer.

43-Single-layer coarse steel wire armored polyethylene quilt layer.

53 - single-layer steel strip wrinkled longitudinal wrap armored polyethylene outer coat.

553 - double-layer steel strip wrinkled longitudinal wrap armored polyethylene coat.

BVS copper conductor PVC insulated stranded flexible wire;

BYVR polyethylene insulated PVC sheathed cord;

WD: Halogen-free and low-smoke type.

ZR: Flame retardant.

NH: Refractory type.

DH: Fireproof type.

120 square millimeter power cable refers to the diameter of each phase cable is 120 square millimeters, but due to the manufacturer's pursuit of greater interests, the current cable diameter is significantly smaller than the nominal wire diameter, but it basically does not affect the current carrying capacity of the cable.

In your order: PVC insulation, PVC protection flexible wire, wire cross-section 70mm square, three-core; squared, two-core; PVC insulated PVC protection control cord 1 square two cores; Control shielding cord 1 square 10 cores; 21 cores 1 square; 7 cores 1 square.

How to look at the specifications and models of cables, take you to quickly understand.

The correct model of flame retardant wire should be ZR-flame retardant.

The wire and cable representation method is mainly composed of three parts: model, specification and standard number. For details, please refer to the model number on the surface of the cable or wire. The one with z is generally flame retardant, and the one with n is fire resistant.

Irradiated flame retardant wires look denser than ordinary wires, and the feel is different to the touch, and irradiated flame retardant wires are delicate and smooth to the touch, and they look stronger. It has a higher ampacity than ordinary wires. Eco-friendly, safe and long-lasting.